Protector for protecting the outer surfaces of metal objects



Aug. 24, 1937. c. M. OBOYLE PROTECTOR FOR PROTECTING THE OUTER SURFACE OF METAL OBJECTS Filed Dec. 6, 1934 2 Sheets-Sheet l INVENTOR (War/es /V/. O'BOy/e BY 1 z I t m ATTORNEYS Aug. 24, 1937. c, M, OBOYLE 2,090,850

PROTECTOR FOR PROTECTING THE OUTER SURFACE OF METAL OBJECTS Filed Dec. 6, 1934 2 Sheets-Sheet 2 INVENTOR mm W1 ATTO R N EYS ends of pipe such as the threaded ends.

Patented Aug. 24, 1937 waste PROTECTOR FOR. PROTECTING THE OUTER SURFACES OF METAL OBJECTS 5 Claims.

This invention relates to protectors for protecting the outer surfaces of metal objects.

The device is adapted for use in protecting rifiing bands on projectiles and for protecting the Such parts are subjected to serious damage in handling, as in the shipment or storage thereof.

For instance, the rifling bands of projectiles are formed of relatively soft metal such as cop- L per and are easily marred or deformed and when so injured are unserviceable. Moreover, the threaded ends of pipe under the rough handling to which they are subjected in transportation are often so injured that the pipe cannot be used.

This invention has for its salient object to provide a protector that is simple and practical in construction, can be easily applied and can be readily removed when the protected article is to be used.

Another object of the invention is to provide a protector so constructed and arranged and so secured that it will be firmly held in position against displacements and will effectively protect the surface on which it is mounted.

Further objects of the invention will appear from the following specification taken in connection with the drawings which form a part of this application, and in which- Fig. l is a view partly in section and partly in elevation illustrating a portion of the projectile with a protector thereon constructed in accordance with the invention;

Fig. 2 is a view similar to Fig. 1 showing how the flexible retaining means is introduced between the protector and the part to be protected;

together;

Fig. 5 is a sectional elevation taken at right angles to Fig. 4;

Fig. 6 is a sectional elevation taken. substantially on line 6-5 of Fig. 1;

Fig. 7 is a view similar to Fig. 1 but showing a slightly different shape or form of protector;

Fig. 8 is a sectional elevation taken substantially on line 88 of Fig. 7;

Fig. 9 is a view similar to Fig. 1 but showing another shape or form of protector constructed in accordance with the invention;

Fig. 10 is an elevational view showing a portion of the connected ends of a protector similar in construction to that shown in Fig. 9 but adapted to receive a cord or rope instead of a fiat tape as the anchoring or securing means;

Fig. 11 is a view similar to Fig. 10 but illustrating another slight modification of the invention;

Fig. 12 is a view similar to Fig. 1 but shows a protector having two annular channels each adapted to receive flexible anchoring means;

Fig. 13 is a sectional elevation of another slightly modified form of protector;

Fig. 14 is a plan view of the structure shown in Fig. 13;

Figs. 15 and 16 illustrate in section and plan another slightly modified form of protector constructed in accordance with the invention;

Fig. 1'7 illustrates a type of protector adapted particularly for protecting the threaded end of a pipe, this view being similar to Fig. 1;

Fig. 18 illustrates another modification of the invention adapted for use in protecting the end of a pipe;

Fig. 19 is a sectional elevation similar to Fig. l but showing the protector designed to protect two rifling bands instead of one;

Fig. 20 is a view similar to Fig. 3 but shows the protector formed in two sections instead of as a split band.

Figs. 21 and 22 are plan and edge views, respectively, of another form of connection that may be used to connect the ends of the split band or sections.

The invention briefly described consists of a protector comprising a split band having the ends thereof releasably secured together, the band having an opening to receive a flexible retaining and anchoring member which is introduced between the band and the part to be protected by relative rotation between the band and the member on which it. is-mounted. One end of the flexible retaining member is held against relative movement with respect to the part to be protected and the other end is drawn through the opening in the protector and forms an exceedingly tight anchorage between the protector and the part on which it is mounted and also forms a protecting cushion around the part to be protected. The protector anchored in this manner very efiectively performs its protecting function, but it is difiicult to remove the protector when it has performed this function and the article on which it is mounted is to be used. For this reason the ends of the split band or of the sections of the protector, if the protector is formed in a plurality of sections, are secured together in such a manner that the ends can be disconnected and the tension released so that the band or protector can be removed. Furthermore, the internal diameter at one edge of the protector is made less than at the other edge thereof, so that the anchored end of the flexible retaining member can be passed beneath the edge having the greater internal diameter and held as the flexible retaining means is drawn into the protector. Furthermore, the edge with the reduced diameter acts as an abutment in conjunction with a projecting part on the part to be protected to limit any lateral travel of the protector as the flexible protecting means is drawn thereinto.

Further details of the invention will appear from the following description.

In the embodiment of the invention illustrated in Figs. 1 to 6, inclusive, the protector is shown as mounted on the outer surface of a projectile 25 having a rifling band 26 mounted thereon.

The protector consists of a split band having an annular groove or channel 21 adapted to be positioned over the rifling band 28 and having laterally extending flanges 28 and. 29 at the two sides of the annular groove. Attention is called to the fact that the inside diameter of the flange 2a is less than the inside diameter of the flange 28.

The two ends of the split band are illustrated in Fig. 4 in separated relation before they are connected together. One end portion A has tabs and 35 extending beyond the channel portion of the projector and in alinement with the flanges 2E and 2%, the ends of the tabs being bent backwardly, as shown at 32. The ends of the portions 32 are bent outwardly, as shown at 33, to form projections.

The other end B of the band has oppositely disposed notches 34 and 35 formed in the flanges 28 and 29 at points spaced from the end of the portion B. It will be understood that the ends A and B are connected together before the protector is mounted on the article to be protected. This is done by bending the portions 32 outwardly and passing these portions through the notches 34 and 35 and then bending the portions 32 down on the outer surfaces of the ends of the flanges 28 and 29 on the end B of the protector. This is shown in Fig. 3.

It will be noted that when the two ends A and B are connected, a slot 36 is formed between the connected ends for receiving the flexible anchoring means which is introduced through this slot or opening.

In Fig. 2 the flexible retaining means is shown as a tape T. One end of the tape, X or X is passed under the flange 28 and is held against movement while the remaining portion of the tape which extends through the slot 36 is drawn into the channel Ell. It will be obvious that this operation can be accomplished by holding the projectile and end X stationary and rotating the protector or vice versa.

In order to facilitate the rotation of the protector, openings QB are formed in one of the flanges, as the flange 29, to receive a spanner wrench or, as shown in Fig. 3, the protector may be provided with outwardly extending lugs t! for the same purpose.

It will be obvious that a suflicient amount of tape can be drawn into the protector to form a very compact mass or cushion between the protector and the part to be protected. If desired, in order to limit the amount of tape drawn into the protector, the tape may have a clip 29 secured to the free end thereof.

It has been found difiicult in practice to loosen a protector thus secured and for this reason the protector described and claimed in this application is formed as a split band or in sections with the ends so connected that they can be released readily and without requiring the use of any special tools. For instance, when the protector shown in Figs. 1 to 6, inclusive, is to be removed a blow is struck against the ends 33 of the folded over or bent ends of the tabs 30. This will cause the portions 32 to be bent outwardly and the pressure of the flexible retaining or anchoring means between the part protected and the inner wall of the protector will cause the protector to spring open. It can then be readily removed.

It will be obvious that the protector may take any desired form or shape, this being determined by the particular conformation of the outer surface of the part to be protected.

The construction shown in Fig. 7 is substantially the same as that shown in Figs. 1 to 6, but the channel in this form of the invention is domed or V-shaped and the flexible anchoring means is shown in the form of cord or rope R. It will also be noted that the opening between the connected ends A and B in Fig. 7 is substantially circular and that the end A of this protector is flared upwardly, as shown at 45, to facilitate the insertion of the round flexible retaining means.

The protector shown in Figs. 9 and 10 is designed to protect a relatively wide rifling band. Fig. 9 shows the protector with an annular V- shaped channel it and a slotted opening t! between the connected ends A and B. The ends are connected in this form of the invention in substantially the same manner as that shown in Figs. 1 to 6, inclusive. An annular reinforcing rib 58 is shown adjacent one edge of the protector to stiffen the edge and to prevent its deformation.

Fig. 10 shows a round opening 49 for receiving a cord or rope as the flexible anchoring and retaining members instead of a slotted opening, as shownv in Fig. 9.

Fig. 11 illustrates a construction similar to that shown in Figs. 9 and 10, but in this form of the invention a slot 50 for receiving the flexible retaining means extends from the right hand 5' edge substantially through the width of the channel 45. Only one connecting tab 5! is shown for securing the ends of the protector together.

In the form of the invention shown in Fig. 12 the protector is similar to that illustrated in Fig. 9 but has two annular channels 52 and 53 to receive the flexible retaining and anchoring means and also has; two openings 54 and 55 through which this flexible means is introduced.

Figs. 13 and 14 illustrate another modification of the invention in which there is shown a protector consisting of a split band having an annular channel 60 and laterally extending flanges GI and 62 at the side edges thereof. The ends of the split band are not connected in this case, but one end 63 is flared upwardly and is positioned above but in spaced relation to the other end thereof. An opening 6'3 receives the flexible retaining means and it Will be understood that this protector is made of relatively stiff material so that even after the flexible retaining means has been drawn in and tightly compressed around the part to be protected the ends of the split band will not be materially separated. After this flexible means has been drawn in one end is left projecting outwardly through the opening between the ends of the band and the portion 63 is then bent downwardly by a blow into tight engagement with this protecting end.

The last operation may be used in securing the flexible retaining means with the protectors hereinbefore described by a sharp blow on one end or the other of the split band, thus causing this end to be dented in against the flexible retaining means, as shown at 65 in Figs. 1 and 6.

In the form of the invention shown in Figs. 15 and 16 the construction is similar to that shown in Figs. 13 and 14 except that a substantially circular opening 66 is formed between the ends of the split band and outwardly projecting portions 61 and 68 are formed at the edges of the opening. 'These can'be hammered down or bent inwardly against the flexible retaining means after this means has been anchored therein.

In the form of the invention shown in Fig. 17 the protector is illustrated as designed for protecting the threaded end of a pipe H. The protector is split and the ends are connected by lugs 12 and 13 similar to those shown in the preceding figures. It will be noted that the wall of the protector is slightly tapered from end to end, the larger end of the protector having an internal flange M which engages the end of the pipe 1|. A-slot i5 is formed between the ends of the protector to permit the passage of the flexible anchoring or retaining means.

Fig. 18 shows another embodiment of the invention particularly designed for protecting the ends of pipe. This construction is similar to that shown in Fig. 17 but shows a flange 80 which is substantially parallel to the outer wall of the protector and extends inside the pipe end. This form of protector is also split and has connecting means 8! for the ends thereof.

Fig. 19 is similar to Fig. 1 but shows a protector extending over two rifiing bands instead of one.

If desired, the protector illustrated and described in the foregoing specification may be formed of a plurality of sections, as shown in Fig. 20, the ends of the sections being connected by securing means 82 similar to those illustrated in Figs. 1 to 6 and the following figures. In this form of the invention an opening for receiving the flexible anchoring and retaining means may be provided only between two connected ends.

The particular form of securing means for securing the ends of the split band or the ends of the sections, if the protector is made in the form illustrated in Fig. 20, is not material but it is desirable that the connecting means be provided with an outwardly projecting portion engageable by a tool for releasing the ends. In Figs. 21 and 22 the two ends of the protector are provided with oppositely disposed notches or slots 85. The ends are connected by a clip 88 comprising a portion 81 which is positioned beneath the ends of the protector or band and with overlapping portions 88 and 89 which are positioned above the ends of the band. The overlapping portion 88 is provided with an outwardly extending lug 9|] adapted for engagement by a suitable tool when the ends of the protector are to be released.

From the foregoing description it will be clear that a simple, practical and inexpensive form. of protector has been designed and with the protector constructed and arranged as described will efiiciently protect the article on which it is mounted, can be easily and quickly applied and can be readily released when the article protected is to be used.

Although certain specific embodiments of the invention have been particularly shown and described it will be understood that the invention is capable of modification and that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, as expressed in the following claims.

What I claim is:

l. A protector comprising a split band, means securing the ends of the band together, said ends being spaced apart throughout a portion of their width to form a slot for receiving flexible retaining means, said band having an annular channel and laterally extending flanges at the edges of said channel, the internal diameter of one flange being less than the internal diameter of the other flange.

2. A protector comprising a band having overlapping ends and an opening to receive flexible retaining means, and means securing said band ends, said means including bendable lugs having portions projecting outwardly from the periphery of the band, the lugs extending in a direction parallel to the periphery of the band and being bendable on axes parallel to the axis of the band.

3. A protector comprising a split band having an annular channel intermediate the lateral edges thereof and having an opening leading into said channel for receiving flexible anchoring means, and means located at each side of said channel for securing the ends of the band, said securing means including bendable portions whereby the ends of the band can be released said portions being bendable on axes parallel to the axis of the band.

4. A protector comprising a split band having an annular channel intermediate the lateral edges thereof and having an opening at the ends of the band leading into said channel for receiving flexible anchoring means, and means located at each side of said channel for securing the ends of the band, the internal diameter of the band at one side of the channel being less than the internal diameter of the band at the other side of the channel.

5. A protector comprising a split band of relatively stiff metal having an annular channel formed therein between the edges thereof and having a lateral flange at each edge of the channel, said band having an opening between the ends leading to said annular channel, one end of the band having a portion overlapping but spaced outwardly from said opening.

CHARLES M. OBOYLE. 

